Software specifications

TDA7567PD

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Doc ID 16903 Rev 1

If R/W = 1, the TDA7567PD sends 4 "Diagnostics Bytes" to µP: DB1, DB2, DB3 and DB4.

D5

Normal muting time (D5 = 0)

Fast muting time (D5 = 1)

D4

Standby on - Amplifier not working - (D4 = 0)

Standby off - Amplifier working - (D4 = 1)

D3

Power amplifier mode diagnostic (D3 = 0)

Line driver mode diagnostic (D3 = 1)

D2

Current detection diagnostic enabled (D2 =1)

Current detection diagnostic defeat (D2 =0)

D1

Right channel power amplifier working in standard mode (D1 = 0)

Power amplifier working in high efficiency mode (D1 = 1)

D0

Left channel power amplifier working in standard mode (D0 = 0)

Power amplifier working in high efficiency mode (D0 = 1)

Table 7.

IB2 (continued)

Bit

Instruction decoding bit

Table 8.

DB1

Bit

Instruction decoding bit

D7

Thermal warning 1 active (D7 = 1) T = 140 °C

D6

Diag. cycle not activated or not terminated (D6 = 0)

Diag. cycle terminated (D6 = 1)

D5

Channel CH3

current detection IB2 (D7) = 0

Output peak current < 300 mA - Open load (D5 = 1)

Output peak current > 500 mA - Normal load (D5 = 0)

Channel CH3

current detection IB2 (D7) = 1

Output peak current < 125 mA - Open load (D5 = 1)

Output peak current > 250 mA - Normal load (D5 = 0)

D4

Channel CH3

Turn-on diagnostic (D4 = 0)

Permanent diagnostic (D4 = 1)

D3

Channel CH3

Normal load (D3 = 0)

Short load (D3 = 1)

D2

Channel CH3

Turn-on diag.: No open load (D2 = 0)

Open load detection (D2 = 1)

Offset diag.: No output offset (D2 = 0)

Output offset detection (D2 = 1)

D1

Channel CH3

No short to Vcc (D1 = 0)

Short to Vcc (D1 = 1)

D0

Channel CH3

No short to GND (D1 = 0)

Short to GND (D1 = 1)